Maxitrol M520-3/4 Modulator Valve

The Maxitrol M520-3/4 Modulator Valve delivers precise fuel modulation for reliable burner control. This 3/4 inch modulator valve features end connections that are female threaded x female threaded, ensuring a secure fit in standard gas piping.

Designed for natural gas, mixed gas, liquefied petroleum gas and LP gas air mixtures, it suits atmospheric, infrared and direct-fired burner applications. The unit carries UL/CSA approval for safe operation in both Canadian and US systems.

Key specs include a temperature rating of -40 to 125 F and pressure ratings of 1/2 psi (inlet) and 2.5 psi (emergency exposure limit), making it suitable for demanding burner environments. The compact form factor complements installations with tight clearances, while the 3.4 inch end-to-end distance and overall dimensions help with layout planning.

Vent connections and mounting are straightforward, with a 1/8 inch threaded 12A06 vent pipe connection and a swing radius of 4.3 inches. This modulator valve is a versatile choice for precise control in modern burner systems.

• Nominal Size: 3/4 inch
• End connections: female threaded x female threaded
• Gas types supported: Natural, Mixed Gas, LPG and LP gas air mixtures
• Temperature range: -40 to 125 F
• Pressure ratings: 1/2 psi inlet, 2.5 psi emergency exposure limit
• Vent pipe connection: 1/8 inch threaded 12A06
• Swing radius: 4.3 inches
• Dimensions: 3.25" W x 5.3" H
• Standards: UL/CSA